Definition of strike hands in US English:

strike hands

phrase

archaic
  • (of two people) clasp hands to seal a deal or agreement.

    • ‘So they struck hands on it, and each agreed to bring ten men of like sentiments with himself to the place of meeting.’
    • ‘The pilgrims adore the sun rising while striking hands and while greeting them piously.’
    • ‘The betrothed and their parents struck hands ratifying their consent to marriage.’
    • ‘Then Roderigo, who has left the room, suddenly and unexpectedly rushes back in to strike hands with Iago, startling the latter who was to embark on his monologue.’
    • ‘He who puts up security for another will surely suffer, but whoever refuses to strike hands in pledge is safe.’